HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsPacific redfin Pacific redfin (Tribolodon brandtii) Scientific name: Tribolodon brandtii Dybowski, 1872 The Pacific redfin (Tribolodon brandtii) is a freshwater fish of the family Cyprinidae. In the aquarium it needs water at 10–24°C (50–75°F). Pacific redfin care at a glanceTemperature10–24°C (50–75°F) BiologySpawns from May to September. Spent adults descends to sea after spawning. Immature specimens occur in the mouths of rivers the whole year round; the young descend to the sea upon attaining a length of 7-9 cm.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTribolodon brandtiiFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length50.0EnvironmentMarine; freshwater; brackish; demersal; anadromousClimateTemperateDistributionNorthwest Pacific: Pacific coast from the Shantars to Korea and southward to 34?N, in rivers of Sakhalin and Japan, as well as on the Iturup and Kunashir islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026